Wow, you like to think big!!!
55 gallon HDPE food grade drums w/ heating elements installed for HLT, MLT, and BK. Same for fermenters, these can be sourced free / cheap.
Source a 200 gallon stainless tank, heat with electric or propane.
You will NEED temperature control during fermentation !!!
Throw yeast on that amount of wort it will generate a lot of heat and soar out of an acceptable range quick!!!